Related parties - Liabilities to own pension funds (Details 2) - CHF (SFr)
SFr in Millions
Dec. 31, 2021
Dec. 31, 2020
Activity in loans to related parties    
Liabilities due to Group's own pension funds SFr 331 SFr 643
Bank    
Activity in loans to related parties    
Liabilities due to Group's own pension funds SFr 331 SFr 643